Electric Field-Enhanced Cadmium Accumulation and Photosynthesis in a Woody Ornamental Hyperaccumulator- Thunb.

The multi-system of electro-phytotechnology using a woody ornamental cadmium (Cd) hyperaccumulator ( Thunb.) is a new departure for environmental remediation. The effects of four electric field conditions on Cd accumulation, growth, and photosynthesis of under four Cd treatments were investigated. Under 25 and 50 mg L Cd treatments, Cd accumulation in was enhanced significantly compared to the control and reached 1110.79 mg kg in root and 428.67 mg kg in shoots influenced by the electric field, especially at 2 V cm, and with higher bioaccumulation coefficient (BC), translocation factor (TF), removal efficiency (RE), and the maximum Cd uptake, indicating that 2 V cm voltage may be the most suitable electric field for consolidating Cd-hyperaccumulator ability. It is accompanied by increased root and shoots biomass and photosynthetic parameters through the electric field effect. These results show that a suitable electric field may improve the growth, hyperaccumulation, and photosynthetic ability of Meanwhile, low Cd supply (5 mg L) and medium voltage (2 V cm) improved plant growth and photosynthetic capacity, conducive to the practical application to a plant facing low concentration Cd contamination in the real environment.